With a relatively small population of just over one million , in many ways Oslo is the perfect testing ground for new technologies – from electrical buses and zero-emission construction sites , to circlebased waste management and green energy systems . Mobility hubs promote the use , and sharing , of electric vehicles . Energy positive buildings generate more energy than they use . Open data , the key to many smart city concepts , is also boosting innovation and entrepreneurs are able to lever these data to create even smarter solutions . technologymagazine . com